I was playing a game,where I was human and the other side was orcs.That player was too near so I could see everything,we both were packing up good number of workers.All of a sudden,he used GOBLIN SLAVES?Yes,and they attacked my builders.My builders were vulnerable because they don't have attack,but goblin slaves have 1 or 2,if I am not wrong.
Then me question is
Why human builders cost 3 and have no attack.
Why Goblin slaves have 2 turn cost but are having attack.